C++ wininet undefined reference even with -lwininet linker flag -


i'm new wininet , have following simple c++ code:

void doit(std::string& host, std::string& username, std::string& password) {     hinternet hinternet;     hinternet hftpsession;     hinternet = internetopen(null, internet_open_type_direct, null, null, 0);     if (hinternet == null) {         std::cout << "error: " << getlasterror();     } else {         hftpsession = internetconnect(hinternet, host.c_str(), internet_default_ftp_port, username.c_str(), password.c_str(), internet_service_ftp, 0, 0);         if (hftpsession == null) {             std::cout << "error: " << getlasterror();         } else {             if (!ftpputfile(hftpsession, "c:\\temp\\ftp\\myfile.txt", "/myfile.txt", ftp_transfer_type_binary, 0)) {                 std::cout << "error: " << getlasterror();             }         }     } }

but compiler's output is:

info: configuration "debug" uses tool-chain "mingw gcc" unsupported on system, attempting build anyway. info: internal builder used build g++ -o0 -g3 -wall -std=c++11 -o main.o "..\\main.cpp"  c:\users\u007\appdata\local\temp\ccfeawlk.o: in function `z4doitrsss_s_': c:\projects\ftp-test\debug/../main.cpp:10: undefined reference `_imp__internetopena@20' c:\projects\ftp-test\debug/../main.cpp:14: undefined reference `_imp__internetconnecta@32' c:\projects\ftp-test\debug/../main.cpp:18: undefined reference `_imp__ftpputfilea@20' collect2.exe: error: ld returned 1 exit status

(i link wininet.lib library in eclipse's linker) adding <code>wininet.lib</code> in eclipse

(i tried add -lwininet option compiler nothing)

i use following software:

  • os: windows 10 x64
  • ide: eclipse neon 3
  • compiler: mingw (rubenvb-4.8-stdthread) 4.8.1 20130324 (prerelease)

i saw following links: 1 2 3 nothing there helps me.

thanks suggestion.

based on g++ compile line it's missing library link (wininet). need in eclipse add library program link it.


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